package com.zmn.oms.manager.utils;

import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

import java.util.Map;

/**
 * 获取ioc容器中对象的工具类
 * @author: HuangYongJie
 * @version: v1.0
 * @since: 2019/11/20 16:39
 **/
@Component
public class SpringContextUtils implements ApplicationContextAware {
    /**
     * 上下文对象实例
     */
    private static ApplicationContext applicationContext;

    @Override
    public void setApplicationContext(ApplicationContext applicationContext)  {
        if(SpringContextUtils.applicationContext == null){
            SpringContextUtils.applicationContext = applicationContext;
        }
    }

    /**
     * 获取applicationContext
     *
     * @return
     */
    public static ApplicationContext getApplicationContext() {
        return applicationContext;
    }

    /**
     * 通过name获取 Bean.
     *
     * @param name
     * @return
     */
    public static Object getBean(String name) {
        return getApplicationContext().getBean(name);
    }

    /**
     * 通过class获取Bean.
     *
     * @param clazz
     * @param <T>
     * @return
     */
    public static <T> T getBean(Class<T> clazz) {
        return getApplicationContext().getBean(clazz);
    }
    /**
     * 通过class获取Beans.
     *
     * @param clazz
     * @param <T> Map<String, T>
     * @return
     */
    public static <T> Map<String, T> getBeansOfType(Class<T> clazz) {
        return getApplicationContext().getBeansOfType(clazz);
    }

    /**
     * 通过name,以及Clazz返回指定的Bean
     *
     * @param name
     * @param clazz
     * @param <T>
     * @return
     */
    public static <T> T getBean(String name, Class<T> clazz) {
        return getApplicationContext().getBean(name, clazz);
    }
}
